Car-truck.



W. H. MILLER.

GAR TRUCK.

' APPLICATION nun) JAN. 20, 1908. 899,674. I Patented Sept. 29, 1-908. a SHEETS-SHEET 1.

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I BY %??75.

W. H. MILLER.

GAR TRUCK.

APPLICATION FILED JAN. 20, 1908.

Patented Sept.'29, 1908.

BY W Atria W. H. MILLER.

' CAR TRUCK.

APPLICATION FILED JAN. 20. 190B.

Patented Sept. 29, 1908.

3 BHEETSSHBBT 3. FIG .7.

899,674 18 Fig. 6.

FIG 10 I m u 0 u n a l 0 a ol,..\ 000 u 000 0" 0O 00n/% u a n v n m m FIG; 1a;

ATrEsT WILLIAM H. MlLLER, or CLEVELAND; 01-110.

GAR-TRUCK.

Specification of Letters Patent.

Patented Sept. 29, 1908.

Applieationfll ed January 20, 1908. Serial No. 411,762.

To all whom it 'may concern: I

Be it known that I, WILLIAM H. MILLER, a citizen of the United States, residing at Cleveland, in the county of'Cuyahoga and State of Ohio, have invented certain'new and useful'lmprovements in Car-Trucks, and-do declare that the following is a. full, "clear, and

exact description of the invention, which will enable others skilled in the art to which it ap ertains to make and use the same.

y invention relates "to improvements in car trucks, and the invention consists in a truck constructed and ada ted to o crate substantially as shown an describe 7 and particularly pointed out in the claims.

a In the accompanying drawings, Figure. 1 is a side elevation of myimproved truck.

Fig. 2 is an end elevation, and Fig. 3 is a central cross section on line 3-3, Fig. '1. Fig. 4' is a central elevation on line 4--4, Fig. 5, and Fig. 5 is a plan view of the truck. Fig. 6 is a sideelevation of the bolster, and F' 7 is an end elevation thereof. Fig. 8 is a si e elevation of the'bolster support,-and Fig. 9 is an end'elevation thereo Fig. 10 is a side elevation of the transombox, and Fig ll is an end elevation thereof. Fig. 12 is a diagrammatic view of the thimble and springs at the endof the bolster adapted to cushion the thrust thereof.

The invention as thus shown is a sin le car truck for one end of a car and pattern or others, and in which there are two car axles A and fourseveral wheels A and a truck frame O which is supported inbearin'gs directly upon the ends of said axles outside the car wheels and without intermediate spring; so that I have a rigid and firmly built frame in which the axles rotate. The transom as an entirety is built transversely in the said frame, and is supported from the car axles .independentlg of frame 0 by means of longitudinal bars which are suspended at their ends by rods 2 engaged at'op'posite sides in bearings 4, on

the axles inslde the wheels. Springs 3 mounted on said rods '2 serve to cushion the ends of the bars 1) and afior'd's ring support for the transom, mechanism w ich is equal .ized as to both the axlesA.

E re resents the transom .box,.whichyis built rigidly into-the frame 0 as a central transverse part thereof and is orted'by truss braces c at its ends id wit and constituting apart of the said ame. Bolster B other spring 8 bears against t tion of said thimble andthe end bolster wor . movement thereof, but t tion ofthe bolster bottom and the correspondmember, the outlines of which are clearly shown in Figs.8 and9, and has flat sides resting snugly between the flat sides of transom box E and tubular'projections get its ends adapted to receive the endwise CHSh-r i-oning mechanismfor'the bolster therein.

This mechanism comprises a cup or thimble 6 with a spring 7 set therein and bearing against the closed end of the tubular extremity gof the bolster support, while anso that a double spring cushion of the desii'ed strength is aflor ed at both ends of bolster B to'sustain and relieve side! thrusts therein as.

may occur when the car rocks from side to side or makes a curve, and which springs are adaptpld. to keep said bolster in itscentral v g position. In this way' I am enabled to relieve the thrust or itch of the car incident to travel and whic occurs on'all roads everywhere however well they may be built. The bolster B is adapted to rest within the flat sides of the base supporting member G and has a limited 'endwlse play thereinior the accommodations just described subject to the said springs 6 and 8, and rests its weight upon said sup ortin member throu"h toothed supportln rol are 9 audio in't e said support G. he bottom of the bolster is fashioned to'th'e segment of a circle lengthwise, like a rocker, and has a rack 12 at its bottom adapted to engage in the said wheels Q-and 10 upon which it rests, so that when the bolster rocks from. side to side of the car the said rollers turn 'corresppndingl};1 with-the e'curve construcing arrangement of said rollers tends to settle the bolster back to its central workin positionwhen any side strain thereon is re ieve'd.

The said bolster supporting member E has a double spring-support, the first of which is in I the heavy springs" 14 beneath each end thereof resting upon or in the truck frameC in the of roller Wheels 10 for the bolster and the s ring su ported bars I), Fig. 4. Vertical s ots in t e transom box accommodate the play of spindles 16. The rollers 9 for the ols'ter are mounted on spindles in the member G, but have no springs, in this instance, so that theload u on the bolster is carried by the two sets of springs 14 and 15, and through bars D by springs 3, thus distributing the burden.

The bolster B is surmounted at its end with two rollers 18 adapted to serve as side rests for the body of the car, While the load as such comes to the center as usual, and the said rollers are seated in or over cavities or pockets in the bolster which are adapted to e filled with oil and thereby provide against friction and noise at this point.

The bolster rest or support G is positively confined or anchored in transom box E and cannot fall out when the truck is inverted, and the. bolster is confined by cross rods 20 in holes21 in cars on the sides of'said support.

It is to be observed that the bolster and its sprin supported member and the bars D and t eir rests on the axle of thetruck frame C, are se arately removable, so that any one of said parts can be repaired or replaced without disturbing said frame.

It will be observed that the springs 3 are duplicated on each car axle for sup orting bars D, and that supporting rods or olts 2 havesufiicient length to allow for all the lay required to render springs 3 perfectly e'ff'bctive. The proportion of weight that may come onto the car axle tlirough this s ecial and supplemental support for the loa may not be accurately stated in roportions as compared with the wei ht t at will ccme upon frame 0 through t e rest ofbolster G upon the springs 14 at its ends, but more or sprin s 3 are made heavier. .45

' distributes the load on the ear axles.

less of the Weight or load can be transferred through the carrying bars D and move as the This very materia y relieves the weight on frame C said 11 this wa I can make a four wheel truck to serve al the purposes of a six Wheeltruck and give improved results in service.

The transom box has slots 23 adapted to accommodate shafts or spindles 16 which enga e springs 15 from bars D.

at I claim is 1. In car trucks, a truck frame having a transom box acrossits center, "a to bolster and a base bolster confined in said ox, and

s ring sup orts forsaid bolsters resting upon t e car a e inside the wheels thereon.

2. In car trucks, a truck frame having a transom box across its middle, two bolster members vertically movable to ether in said box and spring supports therefor independent of said truck frame and engaged with the car axles.

3. In car trucks, a truck frame and car axles mounted therein, top and bottom bolsters supported in said frame one over the' other, and bars carrying said bolsters having spring supports at their ends on said axles independently of said truck frame.

4. In car trucks, a truck frame, a base bolster having a spring support in said frame, andtoothed rollers mounted therein, and a top bolster having a rack resting on said rollers and springs bearing against the ends of said top bolster.

5. A car truck having a transverse transom box, a base bolster therein having toothed rollers and a top bolster having a rocker shaped bottom provided with teeth resting on said rollers.

6. A car truck comprising a rigid frame and axles therein, in combination with a set of bolsters supported one above the other in said frame and movable up and down therein and spring'supports for said bolsters comprising a air of bars sJring supported at their ends cm the car a e and springs interposed directly between the lower of said bolsters and said bars.

7. The truck frame having a transom box and bolsters in said box, springs at the ends of the lower of said bolsters restin in said frame and spring supports for sai bolster between its ends independent of said truck frame.

8. The truck frame and the transom box therein, bolsters in said box rollers in the lower bolster supporting the upper one and having spindles extending laterally through said transom box, and spring supports for the ends of-said'spindles.

9. The combination of the truck frame and the car axles and bolsters across the middle of said frame, with-bars having double sprin hangers at their ends from said axles and springs at their middle supporting said bolsters.

10. A car truck havin two bolsters mounted therein, the upper bolster provided with cavities in its top and ends, and rollers mounted in said cavities and adapted to balance the car body on the truck.

11. A car truck frame and bolsters one above the other therei; the upper bolster havingi cavities in its ends and top and toothed ro ers mounted in said cavities.

12. A car truck frame and a base bolster therein having a bearing cup and springs within and without the same socketed in the ends thereof, and a top bolster having a rocker sha ed bottom supported on said base bolster and engaged endwise by said springs and cup.

13. A. car truck frame having a transom box, a base bolster mounted on sprin s and adapted to play up and down in said ox, a top bolster and springs in the ends of said basebolster bearing against. the ends of said topbolster, said top bolster having a lengthwiserocking support on said. base bolster and a lurality ofspring supports for each end of 5 sald base bolster; I 1

14. A car truck comprisingtwo axles and a frame resting on theends thereof; in combination with bolsters mounted one upon the other in said frame and supports for said bolsters having. bearings on said axles be- 1:)

tween the bearings for'sait frame.

In testimony whereof I sign this specifies; K tion in the vires'ence, of two witnesses.

WILLIAM H. MILLER.

Witnesses:

E. M. FISHER, F. C. MUSSUN. 

